Double burner valve



June 13,1939, ,R. E, SCHOENBERGER DOUBLE BURNER VALVE 2 Sheetsl-SheetlFiled May 20, 1938 June 1939- R. E. SCHOENBERGER DOUBLE BURNER VALVEFiled May 20, 1938 2,162,233 2 sheets-Sheet 2 Patented 13,1939 I r PATET, omen DOUBLE BURNER VALVE RobertE. Schoenberger, Shakerlleights, Ohio,assignor to The W. J. Schoenberger Company, Cleveland, Ohio, acorporation of Ohio Application May 2i), 5 Claims.

.The invention relates to gas valves for controlling the flow of gas toa combined simmer and main burner for gas ranges and the like.

An object of the invention is to provide a sim- 5 ply constructedeconomical and efficient valve having five operative positions, namely,a low simmer position in which a reduced supplyof gas, suiiicient'forsupporting maximum low flame requirements at the simmer burner; isdelivered to the simmer -burner; a highsimmer position in which thesimmer burner receives the'full or maximum supply of gas for high flamerequirements; a full simmer and full main burner posi- 1 tion in whichboth burners receive a suflicient flow of gas to satisfy maximum fullflame requirements; a low simmer and low main position in which amaximum flow of gas for simultaneously supporting maximum low orintermediate cooking flame at both burners is supplied to the respec- 20tive burners and finally a position in which the reduced volume of gassupplied to both burners in the low simmer position is further reducedto a point where itwill merely keep the flame alive for warmingpurposes.

Other objects and advantages of the. invention will be apparent as thedescription is read in connection with the accompanying drawings, in

which:

Figure 1 is a partial plan view and section 30 taken on line |l ofFigure 2, showing the body of valve cut away to expose the gas passages;

Figure 2'is a side view partly in section on line 2-'-2 of Figure 1;

Figure 3 is a. section through the valve taken 2. online 33 of Figure 1;

Figure 4 is a bottom perspective view of th locking cap showing the stoppositions for the lock washer during normal valve operations;

I Figure 5 is a diagrammatic sectional view of the 40 valve taken online 3-3 of Figure 1 showing v operative passages for gas in low simmerposition,

the flow of gas being indicated by arrows;

Figure 6 is a diagrammatic sectional view of the valve taken on line 33of Figure'l showing operative passages forgas in full simmer position;

Figure ,7 is adiagrammatic sectional view of i the valve'taken on line3-3 of Figure 1 showingoperative passages for gas infull simmer andmainburner position; v v t s Figure 8 is a diagrammatic sectional viewof the valve taken on'line 3-3 of Figure 1 showing I operativepas'sag'esfor gas "in simmer and main burner medium fiamepositiom I "Figure 9is adiagrammatic sectional view of M the valve taken online 33 of Figure 1showing 1933, Serial No. 209,122

operative passages for gas in simmer and mai burners in very low flameposition;

Figure 10 is a top plan view of valve showingvalve stem lugs;-

Figure 11 is a pl view of the lock washer or key; and

Figure 12 is a section through the valve stem showing the valveoperating lugs.

Having more particular reference to the drawings my improved valvecomprises a'housi'ng or casing I having therein-a plug receiving here],which extends inwardly from the open outer end of the casing to thebottom wall 3 thereof. Projecting downwardly and centrally from atransversely extending enlargement 4, integrally formed on the underside-of the casing l is a threaded nipple 5, adapted for mounting thevalve preferably in a horizontal position on the upper portion of a gasmanifold, not shown, and whereby a supply of gas for the valve housingis obtained through the vertically disposed gas supply passage 6, forfeeding the burners, also not shown, however it will be understood thatthe valve may be supported in any desired position. Projecting inwardlyor rearwardly from. th inner end of the housing or casing I, on oppositesides'of the longitudinal axis of the bore}, are two screw threadedparallel nipples I and 8 for connection with the respective main andsimmer burners. The gas outlet passages 9 and I through these nipplesare provided with fixed needle valves H and I! which cooperate withadjustable threaded and perforated caps l3 and I4, for regulating thevolumelof gas which may flow through the cap perforations or orifices. land Hi to the usual mixing tubes, not shown.

The transversely extending enlargement I is tapered slots for receivingthe lock washer and formed with opposed pockets or chambers I! and l8 onoppositesides of and alined with the main 'gas supply nipple 5.Extending inwardly throughthe bottom walls l9 and 20 of these respectivepockets are a pair of straight axially alined bypass passages 2| and 22which place the cham- 'bers l1 and It in communication with the main gassupply passage 6. A second pair of angularly disposed short by-passpassages 23 and 24 extend from the respective pockets to the bearingsurface'of the bore 2. Needle valves 25' and 26 screw-,

passage 9 of nipple I which services the main burner.

A tapered plug 39 adapted to be snugly but rotatably received in thebore 2, of the casing I, with its inner end spaced from the bottom wall3 of the bore provides a space or chamber 3|, in the lower end of thebore 2, which communicates with the outlet passage l leading to thesimmer burner through a passage 32 formed in the bottom wall 3, ofchamber 3|. The plug valve is formed with a transverse slot or passage33 cut in the side thereof and a longitudinally disposed slot or passage34, which places the space or chamber 3| in the inner end of bore 2, incommunication with each other in all positions of the plug.

. The plug is also formed with an angularly disposed passage 35, in theplane of transverse passage 33, and leading from the periphery of theplug adjacent one end of passage 33 through an inlet orifice 35' and toan outlet orifice 35" in In operation the plug valve 30 is manuallyrotated by means of a valve stem 36 having its inner end extending intoand interengaging with a hollow extension 31 formed on the outer end ofthe plug, the stem being provided with an operating handle 39 rigidlyattached thereto by any suitable fastening means. Hollow extension 31 isformed with two oppositely arranged slots 39 and 46 of different widthto slidably receive finger portions 4| and 42, integrally formed on theinner end of stem 36 when the latter is partly inserted within thehollow extension. The finger portions are proportioned to fit the slots39 and 49 and are of different width to insure proper assembly.

A flanged apertured cap member 43 sleeved over the valve stem is formedwith a depending flange 44 having apertured ears 45 and 46, which seatupon and are secured to laterally extending apertured lugs 41 and 48,formed on the outer end of the casing I and in spaced relation to theend face thereof. The downwardly facingportion .of the flange 44 isformed with a cut away portion or recess 49 between the cars 45 and 46,and the upwardly facing portion of the flange has a cut away portion orrecess 56 and an extension adjacent one side of ear 46. Opposite sidesor ends of extension 5| serve as stop shoulders 52 and 53 and oppositeend walls of recess 49 likewise provide stop shoulders 54 and 55 forhalting rotations of the valve at certain positions, when the elongatedarm 56 of a lockwasher or'plate 51, is slidably but non-rctatably seatedwithin the hollow extension 31, of the casing l and in engagement withthe slots or recesses 49 and 59. The arm 56 is of a size to fit snuglybut slidably in slot 39 to engage and ride over the edge of flange 44.

When the valve is in off or inactive position arm 56 of locking plate orwasher 51 is in engagement with stop shoulder 53 and can only be rotatedin an anti-clockwise direction. Upon rotation in this direction untilthe arm 56, registers with a cam recess 59 formed in ear 46 of cap 43, acoil spring 59, seated in hollow extension 31 of plug 30, forces the arm56 into this recess thus latching the valve in its first active positionand in which a reduced supply of gas is supplied to the simmer burner asshown in Figure 5. Further anti-clockwise movement of the valve to itssecond position causes the lock plate to snap into recess 49, as shownin Figure 6, where it is held against reverse movement by the shoulder54, except that when the steam is manually moved in an axial directionby pressing on handle 38 and the lock washer is thus moved out of recess49, the washer will clear shoulder 54 and the valve movement can bereversed. In 4 this second activeposition a full supply of gas isreceived by the simmer burner. If the anticlockwise rotation of thevalve is continued until arm 56 engages shoulder 55, the valve will bein position to deliver a full or maxium supply of gas to both burners.In order to rotate the valve to its fourth position, as shown in Figure7, in which there is a reduced flow of gas to both main and simmerburners, it is necessary to move the stem axially and disengage the arm56 from shoulder 55 to permit further anti-clockwise movement duringwhich movement the arm 56 will ride over the inner face of car 45 untilthe arm is halted by snapping into a cam recess 60 formed in this ear,as shown in Figure 8. Further and final anti-clockwise movement ispossible without the necessity of manually moving the stem in an axialdirection, because the arm 56 will ride out of the cam recess 66 againstthe tension of spring 59. This movement continues until arm 56 isstopped by the shoulder 52, at which time the valve will havereached-its fifth and final position, as shown in Figure 9, and theintermediate or reduced flow of gas to both bumers will be cut downstill further to a point just suflicient to maintain a flame for foodwarming purposes.

There are, as previously stated, five active positions, namely, lowsimmer only, high simmer only, high main and simmer, intermediate mainand simmer and low simmerand main positions respectively. In the fifth.or final position the supply of gas is only just sufiicient to preventthe flame at both burners from going out whereas in the fourth orintermediate position suflicient gas is received at both burners tosupport low cooking flames. In the firstposition the casing outlet 29 tothe main burner is closed by the plug and the cross slot 33 is out ofregister with main gas supply passage 6. However the slot 33 doesregister with angular by-passage 24, thus permitting a portion of thegas from main inlet passage 6 to fiow through straight by-pass passage22 into pocket l6 and thence out through angular by-pass 24 to crossslot 33. From cross slot 33 this reduced volume of gas flows downthrough the longitudinal slot 34 in the plug to chamber and 24 is justsufiicient to supply a maximum fiow of gas for low simmer burnercooking.

In the second position of the valve the cross slot 33 is moved intoregister with the main supply passage 6 and a full volume of gas willflow directly into the cross slot and down through longitudinal slot 34to chamber 3land thence to the simmer burner.

Further anti-clockwise rotation of the plug to its third position willcause the cross slot to register at opposite ends with the main gassupply passage 6 and with the transverse passage 29, thus permitting afull flow of gas to outlet passage 9 leading to the main burner. At thesame time a portion of the gas flowing in through supply passage 6, willfiow through longitudinal passage 34 in the plug valve'3ll, to thechamber 3| and thence through passage 32 to outletpassage l0 leading tothe simmer burner. A full supply of gas is thus simultaneously receivedby both burners.

In the fourth position of the valve plug the inlet end 35' of by-passpassage 35, registers with angular by-pass passage 23 and the cross slot33 remains in communication with outlet passage 29. The reduced flow ofgas to the main burner is thus through-by-pass passage 35, cross slot33, outlets 29 and 9, and to the simmer burner the flow is throughlongitudinal slot 34 to chamber 3| and thence through passages 32 andI0. Valve plug by-pass passage 35 has sufllcient capacity to deliver themaximum amount of gas to support a low cooking flame at both burners,whereas casing by-pass'passages 22 and 24 are only of sufficient size tocarry enough gas to support a maximum low cooking flame at the simmerburner only. In other words passage '35 in the plug is about double thecapacity of simmer bypass passages 22 and 24.

Still further rotation of the valve plug to the fifth and final positionwill move the by-pass passage 35 in the plug out of register with supplypassage and into communication with the casing by-pass passage 23.leading" from the pocket IT. The fiow of gas to both burners will now bedrawn down or reduced to the minimum supply of gas which will support aflame, be-

cause the capacity of easing by-pass passages 2| and 23 isonlyapproximately one half that of plug by-pass 35. Consequently only halfthe burners is received by the burners in the final or fifth position.The fiow is from main supply passages 6 through straight by-pass 2| topocket l1, thence through angular casing by-pass 23 to plug by-pass 35and finally to'both burners as in the other positions.

Having thus described the invention, what I claim is: a I

1. A gas range valve for a double burner comprising a casing with a plugreceiving bore having an end wall, a plug having rotatable bearing insaid bore and spaced from' said end wall to form a gas chamber, saidcasing having. a first outlet passage leading from said gas chamber toone burner, said casing having a second outlet from the plug receivingbore to the respective pockets, said plug having a cross slot openinginto the bearing surface .of said plug receiving bore, a by-pass passageleading from said slot adjacent one end thereof and opening through thebearing surface of the plug, said by-pass in said plug having asubstantially greater capacity than that of either of said restrictedbyto the second outlet passage being sealed by the plug, and such thatin a second rotary position a full volume of gas may flow directly fromthe gas supply through said slots to said gas'chamber and to said firstoutlet passage, and such that in a third position of the plug a fullvolume of gas may fiow from the gas supply through the cross slot to thesecond outlet passage and from the cross slot through the" substantiallylongitudinally disposed slot to the gas chamber and thence to the firstoutlet passage,

and such that in a fourth position a reduced volume of gas may flow fromthe gas supply passage through the cross slot by-pass passage in theplug to and through said cross slot to said second outlet passage, aportion of the gas delivered to said cross slot flowing'through saidlongitudinal slot to said gas chamber and to said first outlet passage,and such that in a fifth position of the plug a still further reducedvolume of gas may flow from the gas supply passage to one of saidpockets and thence through the 'by-pass in the plug to said cross slotand thence to said second outlet, a portion of the gas delivered to saidcross slot flowing into the gas chamber through the longitudinal slotand thence to said first outlet passage, and means for rotating-theplug.

2. A gas range for a double burner comprising a casing with aplug'receiving bore having an end wall, a solid plug having rotatablebear-' ing in said bore and spaced from said end wall to form a gaschamber, said casing having a first outlet passage leading from said gaschamber to one burner, said casing having a second outlet passageleading from the plug receiving bore to the other burner, amain-gas'supply passage leading through the casing to said bore, a pairof hollow extensions on said casing forming pockets, ,each of saidpockets having a restricted bypass passage of substantially equalcapacity, leading from said main'gas supply passage, said casing havingseparate by-pass passages leading from the plug receiving bore to therespective pockets, said plug having connecting slots communicating withthe said bore and gas chamber, a by-pa'ss leading from one of said slotsand opening through the bearing surface of the plug, such that in onerotary position of the plug a reduced volume of gas may flow from thegas supply passage through one of said restricted by-passes into one ofsaid pockets and thence through said slots to and through said gas chamber to said first outlet passage, and such that in a second position afull volumeof gas may flow directly from the gas supply through saidslots to said gas chamber and to said first outlet passage, and 'such ina third position of the plug a full volume of gas may flow from the gassupply through one of said slots to the second outlet passage and fromsaid last mentioned slot to the gas chamber and thence to the firstoutlet passage, and such that in another position a reduced volume of,gas may fiow from the gas supply passage through the by-pass passage inthe plug to one of said slots and thence to said second outlet passage,a portion of the gas delivered to said slot flowing to said gas' chamberand to said first outletpassage, and such that in another position oithe plug a still further reduced volume of gas may flow from the gassupply passage to the other of said pockets and thence through theby-pass in the plug to one of said slots and thence to said secondoutlet, a portion oi the gas delivered to said slot flowing into the gaschamber and thence to said first outlet passage, and means for rotatingthe plug.

3. A gasrange for a'double burner comprising a casing with a plugreceiving bore having an end wall, a solid plug having rotatable bearingin said bore and spaced from said end wall to form a gas chamber, saidcasing having a first outlet passage leading from said gas chamber I ingthe plug. a

4. A gas range valve for a double burner comto one burner, said casinghaving a second outlet passage leading irom the plug receiving bore tothe other burner, a main gas supply passage leading through the casingto said bore, a pair of hollow extensions on said casing formingpockets. each of said pockets having a restricted by-pass passage ofsubstantially equal capacity, leading from said main gas supply passage,said casing having separate by-pass passages leading from the plugreceiving bore to the respective pockets, said plug having connectingslots communicating with the said bore and gas chamber, a by-passleading from one of said slots and opening through the bearing surfaceof the plug, such that in one rotary position of the plug a reducedvolume of gas may fiow from the gas supply passage through one of saidrestricted by-passes' into one oi said pockets and thence through saidslots to and through said gas chamber to said first outlet passage, andsuch that in another position of the plug a .iull volume of gas may flowfrom the gas supply through one of said slots to the second outletpassage and from said last mentioned slot to the gas chamber and thenceto the first outlet passage, and such that in another position a reducedvolume of gas may fiow from; the gas supply passage through the by-passpassage in the plug to one of said slots and thence to said secondoutlet passage, a portion of the gas delivered to said slot fiowing tosaid gas chamber and to said first outlet passage, and such that inanother position of the plug a still further reduced volume of gas mayfiow from the gas supply passage to the other of said pockets and thencethrough the bypass in the plug to one of said slots and thence to saidsecond outlet, a portion of the gas delivered to said slot'fiowing intothe gas chamber and thence to said first outlet passage, and means forrotatprising a.' casing with'a plug receiving bore having an end wall, aplug having rotatable bearing in said bore and spaced from said end wallto form a gas chamber, said casing having a first outlet passage leadingfrom said gas chamber to one burner, said casing having a secondoutletpassage leading from the plug receiving bore to the other burner,a main gas supply passage leading through the casing 'to said bore, apair of hollow extensions on said casing forming pockets, each of saidpockets having a restricted by-pass passage of substantially equalcapacity, leading from said main gas supply passage, said casing havingseparate by-pass passages leading from the plug receiving bore to therespective pockets, said plug having a cross slot opening into thebearing surface of the said plug receiv-' ing bore, a by-pass passageleading from said slot adjacent one end thereof and opening through thebearing surface of the plug, said by-pass in said plug havingsubstantially double the capacity of either of said restricted by-passesin said casing, a substantially longitudinally disposed slot in the plugconununicating at opposite ends with said transverse slot and said gaschamber, such that in one rotary position oi the plug a reduced volumeof gas may flow from the gas supply passage through one of saidrestricted by-passes into one of said pockets and thence through thesaid cross slot and longitudinal slot to and through the gas chamber tosaid first outlet passage, the flow of gas to the second outlet passagebeing sealed by the plug, and such that in another position of the pluga full,volume of gas may flow from the gas supply through the cross slotto the second outlet passage and from the cross slot through thesubstantially longitudinally disposed slot to the gas chamber and thenceto the first outlet passage, and such that in another position a reducedvolume of gas may flow from the gas supply passage through the crossslot by-pass passage in the plug to and throughsaid cross slot to saidsecond outlet passage, a portion-of the gas delivered to said cross slotflowing through said longitudinal slot to said gas chamber and to saidfirst outlet passage, and such that in another position of the plug astill further reduced volume of gas may flow from the gas supply passageto the other of said pockets and thence through the by-pass in the plugto said cross slot and thence to said second outlet, a portion of thegas delivered to said cross slot flowing into the gas chamber throughthe longitudinal slot and thence to said first outlet passage, and meansfor rotating the plug.

5. A-gas range valve for a double burner comprising a casing with a plugreceiver bore having an end wall, a plug having rotatable bearing insaid bore and spaced from said end wall to form a gas chamber, saidcasing having a first outlet passage leading from said gas chamber toone burner, said casing having a second outlet passage leading from theplug receiving bore to the other burner, a main gas supply passageleading through the casing to said bore, a pair of hollow extensions onsaid casing forming pockets, each of said pockets having a restrictedby-pass passage of substantially equal capacity, leading from said maingas supply passage, said casing having separate by-pass passages leadingfrom the plug receiving bore to the respective pockets, said plug havinga cross slot opening into the bearing surface of the said plug receivingbore, a by-pass passage leading from said slot adjacent one end thereofand opening through the bearing surface of the plug, said by-pass insaid plug having substantially double the capacity of either of saidrestricted by-passes in said casing, a substantially longitudinallydisposed slot in the plug communicating at opposite ends with saidtransverse slot and said gas chamber,

amaa a such that in one rotary position oi the plug a reduced volume ofgas may flow from the gas supply passage through one of said restrictedlay-passes into one of said pockets and thence through the said crossslot and longitudinal slot to and through the gas chamber to said firstoutlet passage, the flow of gas to the second outlet passage beingsealed by the plug. and such that in another position of the plug a fullvolume of gas may flow from the gas supply through the cross slot to thesecond outlet passage and from the cross slot through the substantiallylongitudinaliy disposed slot to the gas chamber and through said crossslot to said second outlet pas- J saga-a portion of the gas delivered tosaid cross slot flowing through said longitudinal slot to said gaschamber and to said first outlet passage, and

such that in another position of the plug a still further reduced volumeof gas may flow from the gas supply passage to both burners.

Rom'm'r E. 'scaomanam.

